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Introduction Cold Spray or Supersonic particle Deposition (SPD) is a coating technology was initially developed in the mid-1980s at the Institute for Theoretical and Applied Mechanics of the Siberian Division of the Russian Academy of Science in Novosibirsk [1].Cold spray is a technology in which metal, composite or polymer powder particles in a supersonic jet of compressed gas impact a solid surface with sufficient energy to cause plastic deformation and bonding with the underlying material without the creation of heat affected zones which are typical of other deposition processes (thermal spray) and which are undesirable in many structural applications [1].
Rotor blades are made out of various materials, including aluminum, composite structure and steel or titanium with abrasion shields along the leading edge.
For propeller blade repair, if using doubler method, doubler of the same type material must be used and one gauge thicker than the surface to be repaired.
Pitt,On the use of supersonic particle deposition to restore the structural integrity of damaged aircraft structures, International Journal of Fatigue, Vol 33, (2011), pp 1257-126
[2] M.Grujicic, Z.L.Zhao, W.S. deRosset, D.Helfritch, Adiabatic Shear Instability based Mechanism for Particle/substrate bonding in the cold-gas dynamic-spray process, Materials & Design 25, (2004) pp. 681-688

The engineering material properties of the shells are: E = 107.0 psi, μ= 0.3.
The engineering material properties are: E = 210.0 Mpa, μ = 0.3.
The engineering material properties are: E =107.0 Pa，μ=0.25.
The engineering material properties are E and μ.
The Finite Element Method, Volume 1, Science press, 1985, pp434-437 (in Chinese) [7] Z.

The unit type of Solid95 and Q345-D steel were chose as spindle material.
The material will generate plastic yield when the change of the material shape achieves the limiting value of material.
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Acknowledgments This work was supported by the National Natural Science Foundation of China (No:51305128).
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The chemical route preparing PANI nano-fibers as catalyst support is reliable for preparing electrode materials of direct formic acid fuel cell.
Journal of Power Sources, 2014, 250: 128-133
Journal of Power Sources, 2008, 181(1): 79-84
Chinese Journal of Catalysis, 2015, 36: 943–951
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purchasing green factor of enterprises internal management green factor of recycling waste materials green factors of product design green factor of enterprise reputation green factor of enterprise energy consumption green factor of Waste disposal Consistency check 0.8212 0.7961 0.7687 0.7532 0.8103 0.7431 0.7843 It can be seen from Table 4, each factor meanings is shown as follows: F1 has largish normal load in the variable X17, and X17 variables reflecting green degree in the procurement of raw materials, so we name F1 “green factor of raw materials purchasing ”; F2 has greater normal load in the variable X2 and X8, the two variables mainly reflects green degree of manufacturing enterprises internal management, so we name F2 “green factor of enterprises internal management”; F3 has larger loads in variable X3, X15 and X4, the three variables mainly reflect green degree of recycling waste materials, so we called F3 “green factor of recycling waste materials”; F4 has lager
Among them, enterprises internal management, waste disposal, waste materials recycling for are main influence factors of manufacturing enterprises implementing green supply chain.
Journal of Cleaner Production, No.8,55-471,2000 [5] Li Xiang Dong,Yan Hong,Ye Run Qiang.
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But this will result in material waste, time consuming, cost-increasing and so on.
This work is also supported by National Natural Science Foundation of China (Grants No. 50965003) and Open Foundation of the Kay Lab of New Processing Technology for Nonferrous Metals and Materials(GXKFJ09-09).
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Methodology Materials.
Rehman, Azo dyes degradation by microorganisms – an efficient and sustainable approach, Saudi Journal of Biological Sciences. 29 (2022) 103437
Perez, Kinetics and isotherm studies of methyl orange adsorption using polyethyleneimine-graphene oxide polymer nanocomposite beads, Key Engineering Materials. 801 (2019) 304–310
Perez, Optimization of chitosan - mil-101(fe) - polyethyleneimine MOF-based composite beads for methyl orange removal, Materials Science Forum. 1112 (2024) 101–108
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Elsevier Science, Amsterdam.
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“Carbon-doped mesoporous TiO2 film and its photocatalytic activity”, Microporous and Mesoporous Materials. vol. 142, pp. 276–281, Dec 2010

Is the trend in the rapid development of the computer network of science and technology and automation technology, the rapid development of integrated leader in the domestic multimedia computer remote monitoring and control transmission with automatic monitoring and forecasting system.
Landslide remote real time monitoring and control of data transmission, the Chinese Journal of geological hazard and control,VOL132002.3 [4] Wu Shuren, Chen Qingxuan, Guo Jianyang, etc., landslide hazard prediction model analysis and comparison of [J].
Geological dynamic Sinica, 1996, 2 (3): 96-97 [5] YI T H;LI H N;YI X D On GPS observation errors with ANC principles and wavelet denoise method[Journal Article] -Geomatics and Information Science of Wuhan Univemity2006(11) [6] ZHANG B Y;LIU ZH;WANG R B GSM data transmission technology and its application in fieldwork data collection system[Journal Article]-Journal of China Institute of Communications2004(04) [7]ShiYun; ChenShi; FengCang xu geological disaster monitoring the new instruments - laser tiny displacement monitoring system [journal article] - China geological hazard and prevention journal 2002 (01) [8]KTC linear displacement sensor material [9]ZhaoXueMei.
ShiYun laser displacement monitoring system development [journal article] - engineering geophysical journal 2007 (6)
[10]WangHongHui; TuoXianGuo; XuJiang; Xi dashun mountain fracture remote monitoring system [journal article] - automation and instrument 2010 (01)